I have a really big big problem on my pc. Firstly it began when i was trying to restore my ipod touch and with iTunes it didn't work, so i've looked for other software to restore and i found one. But i had to install something called " libusb" but i have a 64 bit and it's only for 32; so i found a video on youtube how to install on 64 but there was some installation issues and then when i've restarted my computer my usb's didn't work . So i've maked a system restore in one of the "repair your computer on startup" features. After the system restore my usb worked fine and libusb was gone; but then i've couldn't open folders shortucts anymore and i can't open from the start menu for example: the computer tab or the control panel tab. it came with a message: explorer.exe This file does not have a program associated with it performing this action. Please install a program or, if one is already installed, create an association in the Defaylt Programs control panel.
i searched for so many forums and i didn't find anything, even rebooting computer i can't because i have a OEM Version of windows 7; MS Windows 7 Ultimate 64-bit Intel Core i5 CPU 750 @ 2.67GHz, 4.0 GB RAM, ATI Radeon HD 4800 Series OEM